A voltotaby association of



Patented July 1, 1919.

(fear eA/QCM ltl snore-nu. nnr, or sournnnrnen, mssncnusn'rrs, nssrenon 'ro annnronn orrronn Specification of Letters Patent.

01E SOUTHBRIDGE, MASSACHUSETTS, A VOLUNTY ASSOCIATION 0]? OPHTHALMIC MOUNTING.

Patented duly f, Llfilfit Application filed January at, 19117. ficrial Ito. l tttdtlt.

reference to an improved type of mounting particularly adapted for use in the industries;

@ne of the leading objects of the prment invention is the provision of an improved construction of mounting in which the several parts shall be rigid and firmwhen in tlti assembled relation, but from which the lenses may be readily detached or replaced as desired without the use of screw or other separate fastening means.

ll further object of the present invention is the provision of an improved type of eye protector or like ophthalmic mounting pat ticularly adapted for industrial purposes, in

which the face engaging portion shall be entirely insulated from the metallic portion of the mounting, rendering the same less susceptible to heating action.

- Another object of my invention is the provision of an improved mounting adapted to retam a plurality of lenses, and in which the front or cover lens may be readily replaced as desired without dan ger of breakage of the v lenses'therebehind or loss of parts of the mounting during the interchangement of the parts.

Uther objects and advantages of my improved construction should be readily apparent by reference to the following specification taken in connection with the acco1npanying drawings, and it will be understood that l may make any modifications in the specific details of construction shown and described within the scope of the appended claims without departing from or exceeding the spirit of my invention.

Figure l rep-resents a front view of my impro ed construction. I

4 g. If represents a plan view thereof.

l"ig. lllll represents a vertical sectional view taken as on the line l[l[l-l][l[ of Fig. l. Fig. ll? represents a similar view of a mddified construction.

In the draw ngs, in which similar charac ters of reference are employed to denote corresponding parts throughout the several views, the numeral 1 is employed to denote the one piece or cylinder metal rim or frame member of my improved mounting, the oppositet frame, members being suitably conneoted as by the adjustable bridge 2 and having fitting therewithin and projecting rearwardly therefrom the shield members 3 of fiber or similar suitable material terminating in the leather or other binding portions 4:, the several parts being united as by small hollow rivets providing a suitable amount of ventilation without excessive apertures which would allow entrance of dust, molten material or the like.

The said rearwardly projecting shield members 3 may be provided with suitable means for retaining the device in position on the head of the wearer, such as temples or the ordinary head band 5 here illustrated.

lit is to be noted that as previously men tioned, the rims l are in the form of a con tinuous or unspli-t tube whereby no exterior projections or joints are required, and are adapted to receive therebetween the rearwardly disposed protecting lens 6 and the forward or cover lens 7, which are cut of circular form to just lie within the tube referred to, if desired one or both. of these lenses being provided with the spun on me tallic rims 8, these rims obviating the necessity for especially edging or finishing the lenses, bracing them or rendering the particles less liable to fly, insuring a better fit or interchangeability of the several parts when used for dififerent frames, and lessening the liability of injury to the fingers of a workman when endeavoring to himself make the desired change of lenses. As is illustratedin the drawings, the rear lens 6 preferably rests against the forward edge of the fiber or non-metallic portion of the cup 53 which serves to limit its rearward motion, and is locked in such position as by the keeper 9 on the spring finger 10 which is suitably secured to the exterior of the frame 1 and extends inwardly through the slot 11. A. second ufinger, or a number offingers if I desired, is placed at a suitabledistance in advance of the firstv finger, as illustrated in tltl ion

Fig. Ill, the purpose of these fingers being to removably secure in position the cover lens 7, at the same time the thickness of the keeper 9 first referred to serving as a spac llll ing member between the lenses 6 and 7, being supplemented in its spacing action if desired by the thickness of the rims 8 so that an air space is provided tending to eliminate fogging of the lenses, and in addition having a slight cushioning effect in the-event of a blow sufficiently forcible to break the cover lens, reducing. the liability of fracture of the rear protecting lens 6.-

In Fig. IV, I have illustrated a slight modification of my construction in which I have shown the lower up-struck ears 12 integral with the frame member 1 in place' of the lower spring fingers and keeper members, the lens in this event being slipped behind one or both of the ears and then being'tilted into place and'suitably locked by the upper spring fingers with their keepers.

From the foregoing description taken in connection with the accompanying drawings the construction of my improved frame should be readily apparent and it will be seen that I have provided a simple and eflicient frame extremely ornamental in appearance, having no widely projecting parts lia-n ble to catch on the clothing or the like, employing no screws or other small and delicate parts in its construction which are liable to become lost in the interchangement of the lenses, and a construction m which the faceof. the wearer is insulated from heat by the non-metallic eye caps and' non-metallic binders or face fitting portions, but with which one or more lenses may be readily inserted or removed as desired, and in which the edges of the lenses are protected by supplemental cells facilitatingtheir carrying or interchangement.

I claim: 1. A device of the character described including frame-members having rear stops,

lenses fitting within the frames and certain of said lenses bearing against the stops, and locking devices having portions projecting into the field of the lenses for securing the lenses within the frames and retaining them in spaced relation with respect to each other.

2. In a device of the character described, the combination with lens-receiving rims having means for limiting the rearward movement of lenses therewithin, said rims in an ular kee )er )ortions one win of D b b each of said keeper portions depending through the slots in spaced relation and the other win" bearing against the outer face of the lens fi'ame whereby the fingers may be sprung outward to facilitate the insertion of a lens within the frame, and when sprung inward the keeper portions will engage opposite faces of the lens to lock it against either forward or rearward movement within the frame.

In testimony whereof I affix my signature in the presence of ,two witnesses.

GEORGE H. DAY.

Witnesses:

HAROLD K. PARSONS, E. M. HALVORSEN. 

